Method for mounting dismountable steel trestle

Abstract

The invention relates to a method for mounting a dismountable steel trestle. When a bailey steel trestle is constructed in water, the construction steps are as follows: firstly, inserting and driving first span steel pipe piles by virtue of a floating crane in deep-water area; secondly, mounting a first span bailey beam truss and a bridge deck system; thirdly, lifting a crawler crane onto the constructed bridge deck by the floating crane; and fourthly, constructing the steel trestle in holes by adopting a method for mounting guiding beams and lifting and inserting the steel pipe piles by a guiding frame by virtue of the crawler crane; and when the bailey steel trestle is constructed on the shore, the construction steps are as follows: firstly, levelling the ground, and inserting and driving the first span steel pipe piles by utilizing the crawler crane to suspend a vibration pile driving hammer; secondly, mounting the first bailey beam truss and the bridge deck system; thirdly, lifting the crawler crane onto the bridge, inserting and driving the steel pipe piles for subsequent piers; and fourthly, erecting the subsequent steel trestle by the crawler crane. The invention has the advantages that the requirement on the site is low, mounting is convenient, the dependence of trestle construction to the operating environment is reduced, the influence of shallow water and oversized storm to work ships is avoided, the operation on water is changed into the operation on the shore, the construction progress is sped up, and the requirement on construction machinery is lowered, thus having high promotional value.

Description

technical field [0001] The invention relates to a dismountable steel trestle installation method, which is suitable for installing the next hole foundation and the trestle structure on the bridge by using a crawler crane after the first hole is erected in the bridge construction, so as to reduce the impact of the trestle construction on the work. The dependence on the environment expands the working area and speeds up the construction progress. It belongs to the technical field of bridge construction. Background technique [0002] In the construction of the existing disassembled trestle bridge, the piling ship is generally used to insert and drive the steel pipe pile foundation of the trestle bridge, and the floating crane is used to install the trestle superstructure. Appropriate water depth is required during construction, and a large number of large-scale construction machines are required, which brings a lot of inconvenience to the erection of steel trestle bridges, whi...

AI Technical Summary

Problems solved by technology

Construction requires proper water depth and a large number of large-scale construction machinery, which brings a lot of inconvenience to the erection of steel trestle bridges and makes it difficult to popularize and apply

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